What is a VLAN and what is it used for?
A VLAN (Virtual Local Area Network) is a virtual network created within a physical infrastructure. It allows you to divide a single switch into multiple independent networks, segmenting devices by function, department, or security level. This ensures better traffic control, improves network performance, and increases protection against unauthorized access.
In practice, VLANs are widely used in companies, schools, and internet service providers. For example, it is possible to have one VLAN for the administrative department, another for finance, and a third for guests — all using the same hardware but completely isolated from each other.
Why use a VLAN Calculator?
Configuring VLANs manually can be confusing, especially when dealing with large ranges or multiple network blocks. The Utinix VLAN Calculator helps you define the correct IDs and block sizes automatically, preventing overlaps and configuration conflicts.
Simply select a standard VLAN range or manually define the start and end values. Then enter the block size — the tool automatically generates the available VLANs according to your setup.
Practical example of use
Imagine a company that wants to divide its network into three groups: employees, guests, and IoT devices. It can use VLANs 10 to 20 for employees, 30 to 40 for guests, and 50 to 60 for IoT. This way, the traffic is isolated, reducing risks and improving the overall network performance.
Our calculator makes this planning easier, ensuring that you use valid IDs (1 to 4094) and avoid VLANs reserved by default on some devices (such as 1002 to 1005).